Yobit have a free coins section but I have to be honest, there support is non existent! I transfered a number of PWR coin to the exchange and it never arrived! even though the transaction was succesfull. I logged a support call months ago and had no response! If you use Yobit, please be aware of this - maybe my issue is a one off occasion. I shall have to try out Kucoin exchange - thanks for sharing.